package com.bailian.framework.web.service;

import java.util.Set;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.security.core.userdetails.UserDetails;
import org.springframework.security.core.userdetails.UserDetailsService;
import org.springframework.security.core.userdetails.UsernameNotFoundException;
import org.springframework.stereotype.Service;
import com.bailian.common.core.domain.entity.SysUser;
import com.bailian.common.core.domain.model.LoginUser;
import com.bailian.common.enums.UserStatus;
import com.bailian.common.exception.ServiceException;
import com.bailian.common.utils.MessageUtils;
import com.bailian.common.utils.StringUtils;
import com.bailian.system.service.ISysUserService;

/**
 * 用户验证处理
 *
 * @author ruoyi
 */
@Service
public class UserDetailsServiceImpl implements UserDetailsService
{
    private static final Logger log = LoggerFactory.getLogger(UserDetailsServiceImpl.class);

    @Autowired
    private ISysUserService userService;
    
    @Autowired
    private SysPasswordService passwordService;

    @Autowired
    private SysPermissionService permissionService;

    @Override
    public UserDetails loadUserByUsername(String username) throws UsernameNotFoundException
    {
        SysUser user = userService.selectUserByUserName(username);
        if (StringUtils.isNull(user))
        {
            log.info("登录用户：{} 不存在.", username);
            throw new ServiceException(MessageUtils.message("user.not.exists"));
        }
        else if (UserStatus.DELETED.getCode().equals(user.getDelFlag()))
        {
            log.info("登录用户：{} 已被删除.", username);
            throw new ServiceException(MessageUtils.message("user.password.delete"));
        }
        else if (UserStatus.DISABLE.getCode().equals(user.getStatus()))
        {
            log.info("登录用户：{} 已被停用.", username);
            throw new ServiceException(MessageUtils.message("user.blocked"));
        }

        passwordService.validate(user);

        return createLoginUser(user);
    }

    public UserDetails createLoginUser(SysUser user)
    {
        log.info("创建LoginUser，用户ID: {}, 用户名: {}", user.getUserId(), user.getUserName());
        
        try {
            Set<String> permissions = permissionService.getMenuPermission(user);
            log.info("获取用户权限成功，权限数量: {}", permissions != null ? permissions.size() : 0);
            
            LoginUser loginUser = new LoginUser(user.getUserId(), user.getDeptId(), user, permissions);
            log.info("LoginUser创建成功，用户ID: {}, 权限数量: {}", 
                    loginUser.getUserId(), 
                    loginUser.getPermissions() != null ? loginUser.getPermissions().size() : 0);
            
            return loginUser;
        } catch (Exception e) {
            log.error("创建LoginUser失败: {}", e.getMessage(), e);
            throw e;
        }
    }
}
